Sounds Cool - Thermoaccoustic Refrigeration

Kwissus · 04-29-2004, 08:32 AM

http://www.benjerry.com/assets/flash...soundsCool.cfm

KnightElite · 04-29-2004, 01:43 PM

Neat. I wonder how powerful these units will be as compared to more conventional refrigerators. Efficiency will also be a consideration.

Brians256 · 04-29-2004, 03:24 PM

Sounds like it could really work well, but I have doubts that it would create a huge temperature differential without a cascaded system. Maybe they'll get it working.

Interesting that they gloss over the use of inert refrigerants like nitrogen and CO2, or the extremely cheap and easy to work with refrigerant propane.

jlrii · 05-13-2004, 09:50 PM

I heard on NPR that they have running units and want to se how well they last b4 any major implementation.

LPorc · 05-13-2004, 11:33 PM

Quote:

Originally Posted by Brians256

Sounds like it could really work well, but I have doubts that it would create a huge temperature differential without a cascaded system. Maybe they'll get it working.

Interesting that they gloss over the use of inert refrigerants like nitrogen and CO2, or the extremely cheap and easy to work with refrigerant propane.

It should work very well, it is essentially a Stirling-style heat pump. The interesting thing is the use of a loudspeaker as a driving diaphragm and a passive diaphragm in resonance, essentially replacing pistons in the Stirling engine. Just as the pistons might be externally driven in a Stirling engine to use it as a heat pump, so the diaphragm is driven in this model. Rather than connecting the pistons (diaphragms) mechanically they are connected by resonance.

I'd say it's a pretty cool idea, and should have near as good efficiency as a Stirling heat pump without the manufacturing hassles of a Stirling engine.

Brians256 · 05-14-2004, 01:59 AM

Well, I hope they cool VERY well and are very efficient. We need technology breakthroughs like that.

wijdeveld · 05-14-2004, 02:05 AM

Is there a more technical site with notes? I'm not that interested in watching video's.

lolito_fr · 05-14-2004, 04:02 AM

I'm not too sure if this is a such a recent discovery, I remember reading about a prototype/lab thermo-acoustic refrigerator a _long_ time back ('94 or '95) in a science magazine. (chucked them all out about 2 months ago, dammit)
I'd be curious though to see whether its evolved into something usefull...

JWFokker · 05-30-2004, 02:41 PM

From what I've heard of this in the past, it doesn't use much power, but it also doesn't cool that well either. Stirling engines look much better.

04-29-2004, 08:32 AM	#1
Kwissus Cooling Neophyte Join Date: Jan 2003 Location: Sweden Posts: 19	Sounds Cool - Thermoaccoustic Refrigeration http://www.benjerry.com/assets/flash...soundsCool.cfm

04-29-2004, 01:43 PM	#2
KnightElite Cooling Savant Join Date: Sep 2002 Location: Saskatoon, Saskatchewan Posts: 294	Neat. I wonder how powerful these units will be as compared to more conventional refrigerators. Efficiency will also be a consideration. __________________ Can anyone else here say that they have a watercooled monster that's 45" tall?

04-29-2004, 03:24 PM	#3
Brians256 Pro/Staff Join Date: Oct 2001 Location: Klamath Falls, OR Posts: 1,439	Sounds like it could really work well, but I have doubts that it would create a huge temperature differential without a cascaded system. Maybe they'll get it working. Interesting that they gloss over the use of inert refrigerants like nitrogen and CO2, or the extremely cheap and easy to work with refrigerant propane.

05-13-2004, 09:50 PM	#4
jlrii Cooling Savant Join Date: Feb 2004 Location: Massachusetts, USA Posts: 158	I heard on NPR that they have running units and want to se how well they last b4 any major implementation.

05-14-2004, 01:59 AM	#6
Brians256 Pro/Staff Join Date: Oct 2001 Location: Klamath Falls, OR Posts: 1,439	Well, I hope they cool VERY well and are very efficient. We need technology breakthroughs like that.

05-14-2004, 02:05 AM	#7
wijdeveld Cooling Neophyte Join Date: May 2004 Location: Netherlands Posts: 29	Is there a more technical site with notes? I'm not that interested in watching video's.

05-14-2004, 04:02 AM	#8
lolito_fr Cooling Savant Join Date: Dec 2003 Location: France Posts: 291	I'm not too sure if this is a such a recent discovery, I remember reading about a prototype/lab thermo-acoustic refrigerator a _long_ time back ('94 or '95) in a science magazine. (chucked them all out about 2 months ago, dammit) I'd be curious though to see whether its evolved into something usefull...

05-30-2004, 02:41 PM	#9
JWFokker Cooling Savant Join Date: May 2004 Location: Kingston, NY Posts: 269	From what I've heard of this in the past, it doesn't use much power, but it also doesn't cool that well either. Stirling engines look much better.

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